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use the rule (a^b)^c = a^(b*c)
how are you getting 7?
is 1/4 really 7/4?
all you need to do is multiply the exponents 1/4 and 4/9
make sure to reduce as much as possible
would it be 4/13?
hopefully you're not just guessing the answer choices
the numerators multiply to ?
so it's 4/36 which reduces to what?
thats the exponent of the answer
how abou ths one? Simplify (7 – 2i) – (3 + 9i)
Hint: (7 – 2i) – (3 + 9i) = 7 – 2i – 3 - 9i
don't forget, when you're distributing that negative through, it has to go to each term inside
solve sqrt x+3-3=x
sqrt(x+3) - 3 = x sqrt(x+3) = x+3 x+3 = (x+3)^2 x+3 = x^2+6x+9 I'll let you finish
now check those potential answers
-3 doesnt work
so that confirms -3
what about -2
the both work
sometimes only one works or sometimes none work, so that's why you need to check both
Explain, in complete sentences, how you might show that radicals should be simplified before being added or subtracted to another radical.
what do you think on this one
i honestly dont knoe
well think about it for a sec
how would you simplify any radical
yes how would you simplify those
i dont understand
how would you simplify something like sqrt(48)
If you're not sure, this page explains how to simplify radicals http://www.regentsprep.org/Regents/math/ALGEBRA/AO1/Lsimplify.htm